you cant compare bitcoin to cmc because bitcoin is a currency and cmc is only a website  .

 sure btc do also have some flaws but its the most trusted coin and the first crypto that is invented while there are other better alternatives to cmc and cmc is not the first website that can provide information when it comes to cryptos 

. cmc is now on a hot issue lately because alot of users complain about thier inaccuracy and manipulations  . cmc can really be easily replaced by a new and honest website that can offer the same service